Hi Alberto,
We deeply regret the inconvenience.
We used to test our controls manually and through automation before every release to make sure there are no breaks in the existing behavior.
However, in this particular case, we have made some architectural changes for the stability of SfNumericUpDown control and it lead to this break in the behavior. We are continuously working on to ensure seamless upgrade for our updates and we will make sure these kind of issues are avoided in future.
Regards,
Iyyappan M.